Gema will demonstrate it OptiFlex2 Q quick-color-change manual powder coating gun, an extended version of its OptiFlex2 B that has been enhanced with additional features for even faster color changes. One such feature is automatic cleaning of the suction tube as it is raised with the powder dust extracted to the booth via an exhaust hose. Automatic cleaning of all components containing powder is achieved with pulses of compressed air. OptiFlex2 Q can handle virtually any type of powder and an unlimited number of colors. It uses minimal space and provides a short payback time, the company says.